1.Expert consensus on the prevention and treatment of radiochemotherapy-induced oral mucositis.
Juan XIA ; Xiaoan TAO ; Qinchao HU ; Wei LUO ; Xiuzhen TONG ; Gang ZHOU ; Hongmei ZHOU ; Hong HUA ; Guoyao TANG ; Tong WU ; Qianming CHEN ; Yuan FAN ; Xiaobing GUAN ; Hongwei LIU ; Chaosu HU ; Yongmei ZHOU ; Xuemin SHEN ; Lan WU ; Xin ZENG ; Qing LIU ; Renchuan TAO ; Yuan HE ; Yang CAI ; Wenmei WANG ; Ying ZHANG ; Yingfang WU ; Minhai NIE ; Xin JIN ; Xiufeng WEI ; Yongzhan NIE ; Changqing YUAN ; Bin CHENG
International Journal of Oral Science 2025;17(1):54-54
Radiochemotherapy-induced oral mucositis (OM) is a common oral complication in patients with tumors following head and neck radiotherapy or chemotherapy. Erosion and ulcers are the main features of OM that seriously affect the quality of life of patients and even the progress of tumor treatment. To date, differences in clinical prevention and treatment plans for OM have been noted among doctors of various specialties, which has increased the uncertainty of treatment effects. On the basis of current research evidence, this expert consensus outlines risk factors, clinical manifestations, clinical grading, ancillary examinations, diagnostic basis, prevention and treatment strategies and efficacy indicators for OM. In addition to strategies such as basic oral care, anti-inflammatory and analgesic agents, anti-infective agents, pro-healing agents, and photobiotherapy recommended in previous guidelines, we also emphasize the role of traditional Chinese medicine in OM prevention and treatment. This expert consensus aims to provide references and guidance for dental physicians and oncologists in formulating strategies for OM prevention, diagnosis, and treatment, standardizing clinical practice, reducing OM occurrence, promoting healing, and improving the quality of life of patients.
Humans
;
Chemoradiotherapy/adverse effects*
;
Consensus
;
Risk Factors
;
Stomatitis/etiology*
2.Expert consensus on the diagnosis and treatment of cemental tear.
Ye LIANG ; Hongrui LIU ; Chengjia XIE ; Yang YU ; Jinlong SHAO ; Chunxu LV ; Wenyan KANG ; Fuhua YAN ; Yaping PAN ; Faming CHEN ; Yan XU ; Zuomin WANG ; Yao SUN ; Ang LI ; Lili CHEN ; Qingxian LUAN ; Chuanjiang ZHAO ; Zhengguo CAO ; Yi LIU ; Jiang SUN ; Zhongchen SONG ; Lei ZHAO ; Li LIN ; Peihui DING ; Weilian SUN ; Jun WANG ; Jiang LIN ; Guangxun ZHU ; Qi ZHANG ; Lijun LUO ; Jiayin DENG ; Yihuai PAN ; Jin ZHAO ; Aimei SONG ; Hongmei GUO ; Jin ZHANG ; Pingping CUI ; Song GE ; Rui ZHANG ; Xiuyun REN ; Shengbin HUANG ; Xi WEI ; Lihong QIU ; Jing DENG ; Keqing PAN ; Dandan MA ; Hongyu ZHAO ; Dong CHEN ; Liangjun ZHONG ; Gang DING ; Wu CHEN ; Quanchen XU ; Xiaoyu SUN ; Lingqian DU ; Ling LI ; Yijia WANG ; Xiaoyuan LI ; Qiang CHEN ; Hui WANG ; Zheng ZHANG ; Mengmeng LIU ; Chengfei ZHANG ; Xuedong ZHOU ; Shaohua GE
International Journal of Oral Science 2025;17(1):61-61
Cemental tear is a rare and indetectable condition unless obvious clinical signs present with the involvement of surrounding periodontal and periapical tissues. Due to its clinical manifestations similar to common dental issues, such as vertical root fracture, primary endodontic diseases, and periodontal diseases, as well as the low awareness of cemental tear for clinicians, misdiagnosis often occurs. The critical principle for cemental tear treatment is to remove torn fragments, and overlooking fragments leads to futile therapy, which could deteriorate the conditions of the affected teeth. Therefore, accurate diagnosis and subsequent appropriate interventions are vital for managing cemental tear. Novel diagnostic tools, including cone-beam computed tomography (CBCT), microscopes, and enamel matrix derivatives, have improved early detection and management, enhancing tooth retention. The implementation of standardized diagnostic criteria and treatment protocols, combined with improved clinical awareness among dental professionals, serves to mitigate risks of diagnostic errors and suboptimal therapeutic interventions. This expert consensus reviewed the epidemiology, pathogenesis, potential predisposing factors, clinical manifestations, diagnosis, differential diagnosis, treatment, and prognosis of cemental tear, aiming to provide a clinical guideline and facilitate clinicians to have a better understanding of cemental tear.
Humans
;
Dental Cementum/injuries*
;
Consensus
;
Diagnosis, Differential
;
Cone-Beam Computed Tomography
;
Tooth Fractures/therapy*
3.Study of symptom clusters and their influencing factors in elderly patients with acute phase stroke
Yumin JIN ; Jinmei ZHANG ; Hongmei LI ; Zheqing WEN ; Lei LI ; Hongyu LI
Chinese Journal of Practical Nursing 2024;40(10):736-744
Objective:To investigate the symptoms and symptom clusters of elderly stroke patients in the acute phase, analyze the factors influencing the symptom clusters and to provide a basis for the implementation of targeted symptom management in elderly stroke patients.Methods:Convenience sampling method was used to select 257 acute-phase elderly stroke patients who attended Fenyang Hospital in Shanxi Province from October 2022 to January 2023, and a cross-sectional survey was conducted by the General Information Questionnaire, Memory Symptom Evaluation Inventory, Modified Barthel Index Scale (MBI), and the National Institutes of Health Stroke Scale (NIHSS), and the symptom clusters were extracted by means of exploratory factor analysis, and the factors influencing symptom clusters were explored by means of binary logistic regression analysis.Results:Of the 257 patients, 138 were male and 119 were female, aged 60 to 90 (70.34 ± 6.94) years old. Factor analysis yielded four symptom clusters, which were named oral-intestinal symptom cluster, negative emotional symptom cluster, fatigue symptom cluster, and perceptual symptom cluster according to the symptom characteristics; regression analysis showed that: stroke site and NIHSS scores were the influencing factors of the oral-intestinal symptom cluster (all P<0.05); per capita monthly family income, number of episodes and MBI scores were the influencing factors of the negative emotional symptom cluster (all P<0.05); number of chronic diseases, type of stroke, and gender were the influencing factors of the fatigue emotional symptom cluster (all P<0.05); and literacy and stroke site were influencing factors of the perception symptom cluster (all P<0.05). Conclusions:Elderly stroke patients in the acute phase of the existence of more symptoms, symptoms interact with each other to form symptom clusters, health care personnel should be symptom clusters as a unit, the implementation of interventions for their influencing factors, effective symptom management, in order to improve the quality of life of patients.
4.Screening and mechanism of the best treatment of red light and silver ion dressing for treatment of chronic non-healing wounds
Jie LU ; Jie JIN ; Lichao YU ; Shasha MA ; Hongmei XU
Chinese Journal of Tissue Engineering Research 2024;28(10):1554-1561
BACKGROUND:Red light irradiation and silver ion dressing are mostly used to treat chronic difficult healing wounds clinically,but the optimal irradiation time of red light irradiation and silver ion dressing for chronic non-healing wounds,and the combination of different silver ion dressings have not been determined. OBJECTIVE:To investigate the optimal irradiation time and dressing combination of red light and silver ion dressing in the therapy of chronic non-healing wounds. METHODS:The chronic non-healing wound model was made by applying Staphylococcus aureus on the whole skin defect and subcutaneous hydrocortisone injection in SD rats.72 rat models were randomly divided into 4 groups with 18 rats in each group by random number table method.The rats were treated on the basis of standard dressing change and the following therapy:A1B1 group(red irradiation 20 minutes + lipid hydrocolloidal silver sulfate dressing),A1B2 group(red light irradiation 20 minutes + calcium alginate fiber dressing),A2B1 group(red light irradiation 30 minutes + lipid hydrocolloidal silver sulfate dressing),and A2B2 group(red light irradiation 30 minutes + calcium alginate fiber dressing);change dressing,irradiate once,and change dressing every 24 hours.After 14 days of continuous treatment,wound healing rate,bacterial colony number,inflammatory response,histomorphology and angiogenesis were detected in each group. RESULTS AND CONCLUSION:(1)With the extension of treatment time,the wound healing rate of rats in the four groups was increased,and the wound healing rate of rats in the A2B2 group at 3,7,and 14 days after treatment was higher than that in the other three groups(P<0.05).(2)The wound bacterial culture results on day 7 after treatment demonstrated that the number of bacterial colonies in the A2B2 group was lower than that in the other three groups(P<0.05).Western blot assay exhibited that with the extension of treatment time,the protein expressions of tumor necrosis factor α and interleukin-6 in wound tissue of rats in the four groups were decreased,while the protein expressions of interleukin-10 were increased.The protein expressions of tumor necrosis factor α and interleukin-6 in the A2B2 group were lower than those in the other three groups(P<0.05).The protein expression of interleukin-10 in the A2B2 group was higher than that of the other three groups(P<0.05).(3)The wound hematoxylin-eosin staining on day 14 after treatment demonstrated that a large number of collagen fibers in the A2B2 group were parallel distributed and the most closely connected,which was significantly better than the other three groups.(4)The results of immunofluorescence staining indicated that the fluorescence intensity expression of CD31 in the A2B2 group was higher than that in the A1B1,A1B2 and A2B1 groups(P<0.05).q-PCR detection at 3,7,and 14 days after treatment exhibited that the mRNA expressions of vascular endothelial growth factor a and vascular endothelial growth factor receptor 2 in the A2B2 group were higher than those in the other three groups(P<0.05).Western blot assay at 3,7 and 14 days after treatment revealed that the protein expressions of vascular endothelial growth factor a and vascular endothelial growth factor receptor 2 in the A2B2 group were higher than those in the other three groups(P<0.05).(5)These findings confirm that 30 minutes of red light irradiation combined with silver alginate fiber dressing has better results in treatment of chronic non-healing wounds.
5.Investigation and analysis of the current status of transjugular intrahepatic portosystemic shunt treatment for portal hypertension in China
Haozhuo GUO ; Meng NIU ; Haibo SHAO ; Xinwei HAN ; Jianbo ZHAO ; Junhui SUN ; Zhuting FANG ; Bin XIONG ; Xiaoli ZHU ; Weixin REN ; Min YUAN ; Shiping YU ; Weifu LYU ; Xueqiang ZHANG ; Chunqing ZHANG ; Lei LI ; Xuefeng LUO ; Yusheng SONG ; Yilong MA ; Tong DANG ; Hua XIANG ; Yun JIN ; Hui XUE ; Guiyun JIN ; Xiao LI ; Jiarui LI ; Shi ZHOU ; Changlu YU ; Song HE ; Lei YU ; Hongmei ZU ; Jun MA ; Yanming LEI ; Ke XU ; Xiaolong QI
Chinese Journal of Radiology 2024;58(4):437-443
Objective:To investigate the current situation of the use of transjugular intrahepatic portosystemic shunt (TIPS) for portal hypertension, which should aid the development of TIPS in China.Methods:The China Portal Hypertension Alliance (CHESS) initiated this study that comprehensively investigated the basic situation of TIPS for portal hypertension in China through network research. The survey included the following: the number of surgical cases, main indications, the development of Early-TIPS, TIPS for portal vein cavernous transformation, collateral circulation embolization, intraoperative portal pressure gradient measurement, commonly used stent types, conventional anticoagulation and time, postoperative follow-up, obstacles, and the application of domestic instruments.Results:According to the survey, a total of 13 527 TIPS operations were carried out in 545 hospitals participating in the survey in 2021, and 94.1% of the hospital had the habit of routine follow-up after TIPS. Most hospitals believed that the main indications of TIPS were the control of acute bleeding (42.6%) and the prevention of rebleeding (40.7%). 48.1% of the teams carried out early or priority TIPS, 53.0% of the teams carried out TIPS for the cavernous transformation of the portal vein, and 81.0% chose routine embolization of collateral circulation during operation. Most of them used coils and biological glue as embolic materials, and 78.5% of the team routinely performed intraoperative portal pressure gradient measurements. In selecting TIPS stents, 57.1% of the hospitals woulel choose Viator-specific stents, 57.2% woulel choose conventional anticoagulation after TIPS, and the duration of anticoagulation was between 3-6 months (55.4%). The limitation of TIPS surgery was mainly due to cost (72.3%) and insufficient understanding of doctors in related departments (77.4%). Most teams accepted the domestic instruments used in TIPS (92.7%).Conclusions:This survey shows that TIPS treatment is an essential part of treating portal hypertension in China. The total number of TIPS cases is far from that of patients with portal hypertension. In the future, it is still necessary to popularize TIPS technology and further standardize surgical indications, routine operations, and instrument application.
6.Clinical efficacy of overall repair technique for rheumatic mitral valve lesions: A retrospective study in a single center
Ming HOU ; Yong LIU ; Ning ZHANG ; Xiong TAN ; Liang WANG ; Jian ZHANG ; Weitao JIN ; Hongmei LIAN ; Yinglong LAI
Chinese Journal of Clinical Thoracic and Cardiovascular Surgery 2024;31(06):867-871
Objective To investigate the clinical efficacy of mitral valve repair technique in the treatment of rheumatic mitral valve lesions. Methods The clinical data of patients diagnosed with rheumatic mitral valve lesions and undergoing mitral valve repair under extracorporeal circulation in our department from 2021 to 2022 were retrospectively analyzed. Results A total of 100 patients were collected, including 78 females and 22 males with an average age of 52 years. There were no secondary open heart or death in the whole group. Extracorporeal circulation time was 136.3±33.1 min, aortic cross-clamping time was 107.6±27.5 min, ventilator use time was 12.9±5.9 h, ICU stay was 2.6±1.4 d, and vasoactive medication use was 823.4±584.4 mg. Before and after the surgery, there were statistical differences in the left ventricular end diastolic diameter, left atrial end systolic diameter, effective mitral valve orifice area, shortening rate of left ventricular short axis, mitral E-peak blood flow velocity, mean mitral transvalvular pressure difference, mitral pressure half-time, and cardiac function graded by New York Heart Association (P<0.05). While there was no statistical difference in left ventricular ejection fraction or left ventricular end-diastolic volume (P>0.05). Conclusion Overall repair of rheumatic mitral valve lesions can significantly improve the cardiac function and hemodynamics of the patients, and is a good choice for patients with rheumatic mitral valve lesions.
7.Development of a Core Competency Scale for Ophthalmic Specialist Nurses and its reliability and validity
Xuezhang ZHANG ; Xiangnan JI ; Yu ZHANG ; Ning LI ; Hongyan SONG ; Shuyan HE ; Rui JIN ; Dike ZHANG ; Dongli NIE ; Hongmei CHEN
Chinese Journal of Modern Nursing 2024;30(14):1864-1870
Objective:To develop a Core Competency Scale for Ophthalmic Specialist Nurses and test its reliability and validity.Methods:This study was a questionnaire development study. This study transformed the core competency evaluation indicators for ophthalmic specialist nurses constructed through literature review, semi-structured interviews, expert consultations, and other methods to form the initial draft of the Core Competency Scale for Ophthalmic Specialist Nurses. From October 2022 to March 2023, a survey was conducted on 364 ophthalmic specialist nurses in China using purposive and snowball sampling. Item analysis, exploratory factor analysis, and reliability testing were performed on the scale.Results:The final Core Competency Scale for Ophthalmic Specialist Nurses included six dimensions of ophthalmic specialized knowledge, ophthalmic specialized skills, essential nursing practice ability, communication and education ability, scientific research ability, and professional competence, totaling 30 items. Exploratory factor analysis extracted six common factors, with a cumulative variance contribution rate of 73.077%. The total Cronbach's α coefficient of the scale was 0.955, the half reliability coefficient was 0.796, and the retest reliability coefficient was 0.973.Conclusions:The Core Competency Scale for Ophthalmic Specialist Nurses has good reliability and validity, which can be used to evaluate the core competency of ophthalmic specialist nurses.
8.Network Meta-analysis of the effects of different types of exercises on children with attention deficit hyperactivity disorder
Lingrong XIAO ; Hongmei WU ; Gang ZHAO ; Yisi JIN ; Xiaoxue WU ; Siyan LIU ; Junru LI
Chinese Journal of Behavioral Medicine and Brain Science 2024;33(8):727-735
Objective:To evaluate the effects of different exercises on executive function, moter skills and core symptoms in children with attention deficit hyperactivity disorder (ADHD) using network Meta-analysis, and to provide evidence-based basis for the treatment of children with ADHD.Methods:The randomized controlled trails(RCTs)of exercises on children with ADHD were searched in Web of Science, PubMed, Cochrane Library, Embase, PsycINFO, CNKI, Wanfang Data, VIP and CBM databases.The retrieval time limit was from the establishment of each database to May 2023.The Cochrane quality review manual was used to evaluate the quality of the included literatures.Stata 17.0 software was used to perform network Meta-analysis.Results:Finally, twenty-four studies were enrolled including five types of exercise intervention, such as aerobic exercise, multicomponent exercise, exergaming, high intensity interval training (HIIT) and traditional low-to-moderate intensity exercise therapy (TRAD).The results of network Meta-analysis showed that: in terms of improving executive function(working memory, inhibitory control, and cognitive flexibility), motor skills and core symptoms of children with ADHD, the optimal exercise intervention was aerobic exercises (surface under the cumulative ranking were 78.9%, 73.0%, 88.7%, 77.9% and 69.9% respectively).Conclusion:Exercises can improve executive function, improve motor skills, and alleviate ADHD core symptoms.Aerobic exercise has a better effect on improving executive function, motor skills and core symptoms of ADHD children.
9.A multicenter study on effect of delayed chemotherapy on prognosis of Burkitt lymphoma in children
Li SONG ; Ling JIN ; Yonghong ZHANG ; Xiaomei YANG ; Yanlong DUAN ; Mincui ZHENG ; Xiaowen ZHAI ; Ying LIU ; Wei LIU ; Ansheng LIU ; Xiaojun YUAN ; Yunpeng DAI ; Leping ZHANG ; Jian WANG ; Lirong SUN ; Rong LIU ; Baoxi ZHANG ; Lian JIANG ; Huixia WEI ; Kailan CHEN ; Runming JIN ; Xige WANG ; Haixia ZHOU ; Hongmei WANG ; Shushuan ZHUANG ; Chunju ZHOU ; Zifen GAO ; Xiao MU ; Kaihui ZHANG ; Fu LI
Chinese Journal of Pediatrics 2024;62(10):941-948
Objective:To analyze the factors affecting delayed chemotherapy in children with Burkitt lymphoma (BL) and their influence on prognosis.Methods:Retrospective cohort study. Clinical data of 591 children aged ≤18 years with BL from May 2017 to December 2022 in China Net Childhood Lymphoma (CNCL) was collected. The patients were treated according to the protocol CNCL-BL-2017. According to the clinical characteristics, therapeutic regimen was divided into group A, group B and group C .Based on whether the total chemotherapy time was delayed, patients were divided into two groups: the delayed chemotherapy group and the non-delayed chemotherapy group. Based on the total delayed time of chemotherapy, patients in group C were divided into non-delayed chemotherapy group, 1-7 days delayed group and more than 7 days delayed group. Relationships between delayed chemotherapy and gender, age, tumor lysis syndrome before chemotherapy, bone marrow involvement, disease group (B/C group), serum lactate dehydrogenase (LDH) > 4 times than normal, grade Ⅲ-Ⅳ myelosuppression after chemotherapy, minimal residual disease in the interim assessment, and severe infection (including severe pneumonia, sepsis, meningitis, chickenpox, etc.) were analyzed. Logistic analysis was used to identify the relevant factors. Kaplan-Meier method was used to analyze the patients' survival information. Log-Rank was used for comparison between groups.Results:Among 591 patients, 504 were males and 87 were females, the follow-up time was 34.8 (18.6,50.1) months. The 3-year overall survival (OS) rate was (92.5±1.1)%,and the 3-year event-free survival (EFS) rate was (90.5±1.2)%. Seventy-three (12.4%) patients were in delayed chemotherapy group and 518 (87.6%) patients were in non-delayed chemotherapy group. The reasons for chemotherapy delay included 72 cases (98.6%) of severe infection, 65 cases (89.0%) of bone marrow suppression, 35 cases (47.9%) of organ dysfunction, 22 cases (30.1%) of tumor lysis syndrome,etc. There were 7 cases of chemotherapy delay in group B, which were seen in COPADM (vincristine+cyclophosphamide+prednisone+daunorubicin+methotrexate+intrathecal injection,4 cases) and CYM (methotrexate+cytarabine+intrathecal injection,3 cases) stages. There were 66 cases of chemotherapy delay in group C, which were common in COPADM (28 cases) and CYVE 1 (low dose cytarabine+high dose cytarabine+etoposide+methotrexate, 12 cases) stages. Multinomial Logistic regression analysis showed that the age over 10 years old ( OR=0.54,95% CI 0.30-0.93), tumor lysis syndrome before chemotherapy ( OR=0.48,95% CI 0.27-0.84) and grade Ⅲ-Ⅳ myelosuppression after chemotherapy ( OR=0.55,95% CI 0.33-0.91)were independent risk factors for chemotherapy delay.The 3-year OS rate and the 3-year EFS rate of children with Burkitt lymphoma in the delayed chemotherapy group were lower than those in the non-delayed chemotherapy group ((79.4±4.9)% vs. (94.2±1.1)%, (80.2±4.8)% vs. (92.0±1.2)%,both P<0.05). The 3-year OS rate of the group C with chemotherapy delay >7 days (42 cases) was lower than that of the group with chemotherapy delay of 1-7 days (22 cases) and the non-delay group (399 cases) ((76.7±6.9)% vs. (81.8±8.2)% vs. (92.7±1.3)%, P=0.002).The 3-year OS rate of the chemotherapy delay group (9 cases) in the COP (vincristine+cyclophosphamide+prednisone) phase was lower than that of the non-chemotherapy delay group (454 cases) ((66.7±15.7)% vs. (91.3±1.4)%, P=0.005). Similarly, the 3-year OS rate of the chemotherapy delay group (11 cases) in the COPADM1 phase was lower than that of the non-chemotherapy delay group (452 cases) ((63.6±14.5)% vs. (91.5±1.3)%, P=0.001). Conclusions:The delayed chemotherapy was related to the age over 10 years old, tumor lysis syndrome before chemotherapy and grade Ⅲ-Ⅳ myelosuppression after chemotherapy in pediatric BL. There is a significant relationship between delayed chemotherapy and prognosis of BL in children.
10.Phenotypically normal couples with recurrent pregnancies of trisomy 21 fetus: genetic analysis and literature review
Ju WANG ; Hongmei ZHAI ; Na LIU ; Jin GU ; Dongyi YU
Chinese Journal of Perinatal Medicine 2024;27(10):842-848
Objective:To investigate the genetic causes in a phenotypically normal couple with three pregnancies of trisomy 21 offspring.Methods:A retrospective analysis was conducted on a phenotypically normal couple who had three pregnancies with trisomy 21 syndrome offspring and were transferred to Shandong Provincial Maternal and Child Health Care Hospital in December 2023. Genetic analysis was performed using quantitative fluorescence polymerase chain reaction (QF-PCR), karyotype analysis, chromosome microarray analysis (CMA), and fluorescence in situ hybridization (FISH). Relevant articles up to December 31, 2023, were retrieved from CNKI, Wanfang Database, Yiigle, and VIP using the terms "recurrent pregnancy", "consecutive pregnancy", "two pregnancies", and "trisomy 21 syndrome (Down syndrome)" in Chinese. Additionally, the English terms "recurrence or recurrent" "trisomy 21 syndrome" and "Down syndrome" were used to retrieve articles from PubMed, Embase, and Web of Science. The genetic causes of recurrent pregnancies with trisomy 21 syndrome fetuses were analyzed and summarized. Results:(1) Case from this hospital: Results of QF-PCR, karyotype analysis, and CMA of amniotic fluid cells in this pregnancy all indicated that the fetus had trisomy 21 syndrome. FISH tests on oral mucosal cells, decidual tissue, and urine sediment cells of the pregnant woman all indicated that she was a mosaic for trisomy 21. Additionally, QF-PCR detection of short tandem repeat (STR) loci on chromosome 21 suggested that there might be gonad mosaicism in the pregnant women, and an extra chromosome 21 in the fetus was derived from gonad mosaicism 21 trisomic cells. (2) Literature review: A total of 13 case reports with detailed records of recurrent pregnancy trisomy 21 syndrome history and related test results of both partners were retrieved, making a total of 14 cases, including seven cases each with a history of 2 and 3 trisomy 21 pregnancies. Translocation trisomy 21 was detected in each pregnancy of two cases. Of the 14 cases, five cases were only detected by peripheral blood samples of the couple, and the results were normal. The other nine cases were also detected by skin fibroblasts (six cases), ovarian tissue cells (two cases), oral mucosa cells (two cases), semen (two cases), and urinary sediment cells (one case), among which six cases indicated that one of the parents was chimeric trisomy 21, and five cases were female chimerism, one case was male chimerism. Only two cases were found to have mosaic trisomy 21 in peripheral blood sample, and the chimerism ratio was lower than that of other samples detected at the same time. In five cases, the extra chromosome 21 was found to be of maternal origin through testing of STR loci on chromosome 21.Conclusions:Parental mosaicism is an important cause of recurrent pregnancies with trisomy 21 syndrome. Testing samples from skin, oral mucosa, blood, semen, and ovaries can help detect low-level mosaicism.

Result Analysis
Print
Save
E-mail